a[b-d] aac y $& ac
a[-b] a- y $& a-
a[b-] a- y $& a-
-a[b-a] - c - /a[b-a]/: invalid [] range in regexp
-a[]b - c - /a[]b/: unmatched [] in regexp
-a[ - c - /a[/: unmatched [] in regexp
+a[b-a] - c - Invalid [] range "b-a"
+a[]b - c - Unmatched [
+a[ - c - Unmatched [
a] a] y $& a]
a[]]b a]b y $& a]b
a[^bc]d aed y $& aed
ab|cd abc y $& ab
ab|cd abcd y $& ab
()ef def y $&-$1 ef-
-*a - c - /*a/: ?+*{} follows nothing in regexp
-(*)b - c - /(*)b/: ?+*{} follows nothing in regexp
+*a - c - Quantifier follows nothing
+(*)b - c - Quantifier follows nothing
$b b n - -
a\ - c - Search pattern not terminated
a\(b a(b y $&-$1 a(b-
a\(*b ab y $& ab
a\(*b a((b y $& a((b
a\\b a\b y $& a\b
-abc) - c - /abc)/: unmatched () in regexp
-(abc - c - /(abc/: unmatched () in regexp
+abc) - c - Unmatched )
+(abc - c - Unmatched (
((a)) abc y $&-$1-$2 a-a-a
(a)b(c) abc y $&-$1-$2 abc-a-c
a+b+c aabbabc y $& abc
a{1,}b{1,}c aabbabc y $& abc
-a** - c - /a**/: nested *?+ in regexp
+a** - c - Nested quantifiers
a.+?c abcabc y $& abc
(a+|b)* ab y $&-$1 ab-b
(a+|b){0,} ab y $&-$1 ab-b
(a+|b){1,} ab y $&-$1 ab-b
(a+|b)? ab y $&-$1 a-a
(a+|b){0,1} ab y $&-$1 a-a
-)( - c - /)(/: unmatched () in regexp
+)( - c - Unmatched )
[^ab]* cde y $& cde
abc n - -
a* y $&
a[-]?c ac y $& ac
(abc)\1 abcabc y $1 abc
([a-c]*)\1 abcabc y $1 abc
-\1 - c - /\1/: reference to nonexistent group
-\2 - c - /\2/: reference to nonexistent group
+\1 - c - Reference to nonexistent group
+\2 - c - Reference to nonexistent group
(a)|\1 a y - -
(a)|\1 x n - -
-(a)|\2 - c - /(a)|\2/: reference to nonexistent group
+(a)|\2 - c - Reference to nonexistent group
(([a-c])b*?\2)* ababbbcbc y $&-$1-$2 ababb-bb-b
(([a-c])b*?\2){3} ababbbcbc y $&-$1-$2 ababbbcbc-cbc-c
((\3|b)\2(a)x)+ aaxabxbaxbbx n - -
'a[b-d]'i AAC y $& AC
'a[-b]'i A- y $& A-
'a[b-]'i A- y $& A-
-'a[b-a]'i - c - /a[b-a]/: invalid [] range in regexp
-'a[]b'i - c - /a[]b/: unmatched [] in regexp
-'a['i - c - /a[/: unmatched [] in regexp
+'a[b-a]'i - c - Invalid [] range "b-a"
+'a[]b'i - c - Unmatched [
+'a['i - c - Unmatched [
'a]'i A] y $& A]
'a[]]b'i A]B y $& A]B
'a[^bc]d'i AED y $& AED
'ab|cd'i ABC y $& AB
'ab|cd'i ABCD y $& AB
'()ef'i DEF y $&-$1 EF-
-'*a'i - c - /*a/: ?+*{} follows nothing in regexp
-'(*)b'i - c - /(*)b/: ?+*{} follows nothing in regexp
+'*a'i - c - Quantifier follows nothing
+'(*)b'i - c - Quantifier follows nothing
'$b'i B n - -
'a\'i - c - Search pattern not terminated
'a\(b'i A(B y $&-$1 A(B-
'a\(*b'i AB y $& AB
'a\(*b'i A((B y $& A((B
'a\\b'i A\B y $& A\B
-'abc)'i - c - /abc)/: unmatched () in regexp
-'(abc'i - c - /(abc/: unmatched () in regexp
+'abc)'i - c - Unmatched )
+'(abc'i - c - Unmatched (
'((a))'i ABC y $&-$1-$2 A-A-A
'(a)b(c)'i ABC y $&-$1-$2 ABC-A-C
'a+b+c'i AABBABC y $& ABC
'a{1,}b{1,}c'i AABBABC y $& ABC
-'a**'i - c - /a**/: nested *?+ in regexp
+'a**'i - c - Nested quantifiers
'a.+?c'i ABCABC y $& ABC
'a.*?c'i ABCABC y $& ABC
'a.{0,5}?c'i ABCABC y $& ABC
'(a+|b)?'i AB y $&-$1 A-A
'(a+|b){0,1}'i AB y $&-$1 A-A
'(a+|b){0,1}?'i AB y $&-$1 -
-')('i - c - /)(/: unmatched () in regexp
+')('i - c - Unmatched )
'[^ab]*'i CDE y $& CDE
'abc'i n - -
'a*'i y $&
a(?:b|c|d){4,5}(.) acdbcdbe y $1 b
a(?:b|c|d){4,5}?(.) acdbcdbe y $1 d
((foo)|(bar))* foobar y $1-$2-$3 bar-foo-bar
-:(?: - c - /(?/: Sequence (? incomplete
+:(?: - c - Sequence (? incomplete
a(?:b|c|d){6,7}(.) acdbcdbe y $1 e
a(?:b|c|d){6,7}?(.) acdbcdbe y $1 e
a(?:b|c|d){5,6}(.) acdbcdbe y $1 e
^(a(?(1)\1)){4}$ aaaaaaaaaa y $1 aaaa
^(a(?(1)\1)){4}$ aaaaaaaaa n - -
^(a(?(1)\1)){4}$ aaaaaaaaaaa n - -
+((a{4})+) aaaaaaaaa y $1 aaaaaaaa
+(((aa){2})+) aaaaaaaaaa y $1 aaaaaaaa
+(((a{2}){2})+) aaaaaaaaaa y $1 aaaaaaaa
(?:(f)(o)(o)|(b)(a)(r))* foobar y $1:$2:$3:$4:$5:$6 f:o:o:b:a:r
(?<=a)b ab y $& b
(?<=a)b cb n - -
(?<!c)b cb n - -
(?<!c)b b y - -
(?<!c)b b y $& b
-(?<%)b - c - /(?<%)b/: Sequence (?%...) not recognized
+(?<%)b - c - Sequence (?<%...) not recognized
(?:..)*a aba y $& aba
(?:..)*?a aba y $& a
^(?:b|a(?=(.)))*\1 abc y $& ab
'(ab)\d\1'i ab4Ab y $1 ab
foo\w*\d{4}baz foobar1234baz y $& foobar1234baz
a(?{})b cabd y $& ab
-a(?{)b - c - /a(?{)b/: Sequence (?{...}) not terminated or not {}-balanced
-a(?{{})b - c - /a(?{{})b/: Sequence (?{...}) not terminated or not {}-balanced
-a(?{}})b - c - /a(?{}})b/: Sequence (?{...}) not terminated or not {}-balanced
-a(?{"{"})b - c - /a(?{"{"})b/: Sequence (?{...}) not terminated or not {}-balanced
+a(?{)b - c - Sequence (?{...}) not terminated or not {}-balanced
+a(?{{})b - c - Sequence (?{...}) not terminated or not {}-balanced
+a(?{}})b - c -
+a(?{"{"})b - c - Sequence (?{...}) not terminated or not {}-balanced
a(?{"\{"})b cabd y $& ab
-a(?{"{"}})b - c - Unmatched right bracket
+a(?{"{"}})b - c - Unmatched right curly bracket
a(?{$bl="\{"}).b caxbd y $bl {
x(~~)*(?:(?:F)?)? x~~ y - -
^a(?#xxx){3}c aaac y $& aaac
^(\(+)?blah(?(1)(\)))$ blah y ($2) ()
^(\(+)?blah(?(1)(\)))$ blah) n - -
^(\(+)?blah(?(1)(\)))$ (blah n - -
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-(?(1)a|b|c) a c - /(?(1)a|b|c)/: Switch (?(condition)... contains too many branches
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(?(?{0})a|b) a n - -
(?(?{0})b|a) a y $& a
(?(?{1})b|a) a n - -
([[:]+) a:[b]: y $1 :[
([[=]+) a=[b]= y $1 =[
([[.]+) a.[b]. y $1 .[
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-[a[:xyz:] - c - /[a[:xyz:]/: unmatched [] in regexp
-([a[:xyz:]b]+) pbaq y $1 ba
+[a[:xyz: - c - Unmatched [
+[a[:xyz:] - c - POSIX class [:xyz:] unknown
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+([a[:xyz:]b]+) pbaq c - POSIX class [:xyz:] unknown
+[a[:]b[:c] abc y $& abc
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+([[:alnum:]]+) ABcd01Xy__-- ${nulnul}${ffff} y $1 ABcd01Xy
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+([[:cntrl:]]+) ABcd01Xy__-- ${nulnul}${ffff} y $1 ${nulnul}
+([[:digit:]]+) ABcd01Xy__-- ${nulnul}${ffff} y $1 01
+([[:graph:]]+) ABcd01Xy__-- ${nulnul}${ffff} y $1 ABcd01Xy__--
+([[:lower:]]+) ABcd01Xy__-- ${nulnul}${ffff} y $1 cd
+([[:print:]]+) ABcd01Xy__-- ${nulnul}${ffff} y $1 ABcd01Xy__--
+([[:punct:]]+) ABcd01Xy__-- ${nulnul}${ffff} y $1 __--
+([[:space:]]+) ABcd01Xy__-- ${nulnul}${ffff} y $1
+([[:word:]]+) ABcd01Xy__-- ${nulnul}${ffff} y $1 ABcd01Xy__
+([[:upper:]]+) ABcd01Xy__-- ${nulnul}${ffff} y $1 AB
+([[:xdigit:]]+) ABcd01Xy__-- ${nulnul}${ffff} y $1 ABcd01
+([[:^alpha:]]+) ABcd01Xy__-- ${nulnul}${ffff} y $1 01
+([[:^alnum:]]+) ABcd01Xy__-- ${nulnul}${ffff} y $1 __-- ${nulnul}${ffff}
+([[:^ascii:]]+) ABcd01Xy__-- ${nulnul}${ffff} y $1 ${ffff}
+([[:^cntrl:]]+) ABcd01Xy__-- ${nulnul}${ffff} y $1 ABcd01Xy__--
+([[:^digit:]]+) ABcd01Xy__-- ${nulnul}${ffff} y $1 ABcd
+([[:^lower:]]+) ABcd01Xy__-- ${nulnul}${ffff} y $1 AB
+([[:^print:]]+) ABcd01Xy__-- ${nulnul}${ffff} y $1 ${nulnul}${ffff}
+([[:^punct:]]+) ABcd01Xy__-- ${nulnul}${ffff} y $1 ABcd01Xy
+([[:^space:]]+) ABcd01Xy__-- ${nulnul}${ffff} y $1 ABcd01Xy__--
+([[:^word:]]+) ABcd01Xy__-- ${nulnul}${ffff} y $1 -- ${nulnul}${ffff}
+([[:^upper:]]+) ABcd01Xy__-- ${nulnul}${ffff} y $1 cd01
+([[:^xdigit:]]+) ABcd01Xy__-- ${nulnul}${ffff} y $1 Xy__-- ${nulnul}${ffff}
+[[:foo:]] - c - POSIX class [:foo:] unknown
+[[:^foo:]] - c - POSIX class [:^foo:] unknown
((?>a+)b) aaab y $1 aaab
(?>(a+))b aaab y $1 aaa
((?>[^()]+)|\([^()]*\))+ ((abc(ade)ufh()()x y $& abc(ade)ufh()()x
-(?<=x+)y - c - /(?<=x+)y/: variable length lookbehind not implemented
-a{37,17} - c - /a{37,17}/: Can't do {n,m} with n > m
+(?<=x+)y - c - Variable length lookbehind not implemented
+a{37,17} - c - Can't do {n,m} with n > m
+\Z a\nb\n y $-[0] 3
+\z a\nb\n y $-[0] 4
+$ a\nb\n y $-[0] 3
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+\z b\na y $-[0] 3
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+'\Z'm a\nb\n y $-[0] 3
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+'\Z'm b\na\n y $-[0] 3
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+'$'m b\na\n y $-[0] 1
+'\Z'm b\na y $-[0] 3
+'\z'm b\na y $-[0] 3
+'$'m b\na y $-[0] 1
a\Z a\nb\n n - -
-b\Z a\nb\n y - -
-b\z a\nb\n n - -
-b\Z a\nb y - -
-b\z a\nb y - -
+a\z a\nb\n n - -
+a$ a\nb\n n - -
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+a\z b\na y $-[0] 2
+a$ b\na y $-[0] 2
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+'a\z'm b\na y $-[0] 2
+'a$'m b\na y $-[0] 2
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+aa$ b\naa y $-[0] 2
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(^|x)(c) ca y $2 c
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+^(.,){2}c a,b,c y $1 b,
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+^([^,]*,){2}c a,b,c y $1 b,
+^([^,]*,){3}d aaa,b,c,d y $1 c,
+^([^,]*,){3,}d aaa,b,c,d y $1 c,
+^([^,]*,){0,3}d aaa,b,c,d y $1 c,
+^([^,]{1,3},){3}d aaa,b,c,d y $1 c,
+^([^,]{1,3},){3,}d aaa,b,c,d y $1 c,
+^([^,]{1,3},){0,3}d aaa,b,c,d y $1 c,
+^([^,]{1,},){3}d aaa,b,c,d y $1 c,
+^([^,]{1,},){3,}d aaa,b,c,d y $1 c,
+^([^,]{1,},){0,3}d aaa,b,c,d y $1 c,
+^([^,]{0,3},){3}d aaa,b,c,d y $1 c,
+^([^,]{0,3},){3,}d aaa,b,c,d y $1 c,
+^([^,]{0,3},){0,3}d aaa,b,c,d y $1 c,
+(?i) y - -
+'(?!\A)x'm a\nxb\n y - -
+^(a(b)?)+$ aba y -$1-$2- -a--
+^(aa(bb)?)+$ aabbaa y -$1-$2- -aa--
+'^.{9}abc.*\n'm 123\nabcabcabcabc\n y - -
+^(a)?a$ a y -$1- --
+^(a)?(?(1)a|b)+$ a n - -
+^(a\1?)(a\1?)(a\2?)(a\3?)$ aaaaaa y $1,$2,$3,$4 a,aa,a,aa
+^(a\1?){4}$ aaaaaa y $1 aa
+^(0+)?(?:x(1))? x1 y - -
+^([0-9a-fA-F]+)(?:x([0-9a-fA-F]+)?)(?:x([0-9a-fA-F]+))? 012cxx0190 y - -
+^(b+?|a){1,2}c bbbac y $1 a
+^(b+?|a){1,2}c bbbbac y $1 a
+\((\w\. \w+)\) cd. (A. Tw) y -$1- -A. Tw-
+((?:aaaa|bbbb)cccc)? aaaacccc y - -
+((?:aaaa|bbbb)cccc)? bbbbcccc y - -
+(a)?(a)+ a y $1:$2 :a -
+(ab)?(ab)+ ab y $1:$2 :ab -
+(abc)?(abc)+ abc y $1:$2 :abc -
+'b\s^'m a\nb\n n - -
+\ba a y - -
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